Formula: C4H8O

Synonyms: Butanone; Methylpropanone; Ethylmethylketone; Methylacetone

MEK (Methyl Ethyl Ketone), also known under the name Butanone, offers strong solvency and fast evaporative properties. They are not listed as a hazardous air pollutant under U.S. EPA regulations.

MEK is used for solutions of coating, adhesive and ink resins (polyurethane, polyester, acrylic, cellulose, polychloroprene), and for paint stripper formulations. MEK's fast evaporation properties make it a good solvent. It is a key fluid in formulating polychloroprene adhesives, especially as a replacement for toluene, and is a component of many gravure printing inks.